Bloch Waves and Bloch Bands of Bose-Einstein Condensates in Optical Lattices
arXiv:cond-mat/0109183 · doi:10.1103/PhysRevA.65.025601
Abstract
Bloch waves and Bloch band of Bose-Einstein Condensates in optical lattices are studied. We provide further evidence for the loop structure in the Bloch band, and compute the critical values of the mean-field interaction strength for the Landau instability and the dynamical instability.
4pages, 3 figures